My experience is kind of like Limited's. Most people weren't paying 11 for it. Tinker was broken enough with Phyrexian Colossus, but an 11/11 indestructable trampler is even better. I like good cards, but my issue with the Colossus is that it is so resilient. One guy in my old playgroup would use it in an Oath of Druids deck. Of course, Oath is a broken card by itself and deserves part of the blame, but without Darksteel Colossus his Oath deck would have been pretty scrubby. I would Boomerang it, but then he'd Brainstorm it back into his library and Oath it up again. I'd kill his other creatures and Edict him, but then he'd just Oath it back up again. Even if I used Swords, he'd have a bunch of life and then he'd just Oath up another Colossus. Also, I'm a long-time fan of both Polar Kraken and Serra Avatar. This card seems to act as a replacement for both. It has an easier mana requirement to play than the Kraken (11 as opposed to 8UUU), the same power and toughness, both trample, it lacks the ridiculous upkeep cost, and it is indestructable. The only thing the Kraken now has going for it is reanimation, and even that drawback can actually be more of an advantage for the Colossus (there are a lot of situations where you might not want your big creature sitting in the graveyard). Serra Avatar is at least cheaper, but she can be killed, doesn't trample, and might be a lot less than 11/11 by the time you get her out. Darksteel Colossus is better than either card. It might be a lot better. It's a very, very good card and I'd Tinker it out in a heartbeat, but it's one of the cards I sometimes wish they hadn't printed.